/*
 * Galaxium Messenger
 * 
 * Copyright (C) 2008 Philippe Durand <draekz@gmail.com>
 * 
 * License: GNU General Public License (GPL)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

using System;
using System.IO;
using System.Collections.Generic;

using Anculus.Core;

using Galaxium.Core;
using Galaxium.Gui;
using Galaxium.Client;

namespace Galaxium.Protocol.GaduGadu
{
	public sealed class GaduConversation : AbstractConversation, IComparable<GaduConversation>
	{
		public event EventHandler<ContactEventArgs> ContactTyping;
		
		public event EntityChangeEventHandler<IDisplayImage> DisplayImageReceived;
		
		private GaduConnection _connection;
	//	private bool _disposed;
		private Queue<IMessage> _incoming_queue = new Queue<IMessage> ();
		private Queue<IMessage> _outgoing_queue = new Queue<IMessage> ();
		
		public Queue<IMessage> IncomingQueue { get { return _incoming_queue; } }
		
		public GaduConversation(IContact primary_contact, ISession session) : base (primary_contact, session)
		{
			_connection = (session as GaduSession).Connection;
			Active = true;
		}
		
		public bool Reconnecting
		{
			get { return false; }
			set { }
		}
		
		public override bool Active
		{
			get { return _active; }
			set { _active = value; }
		}
		
		public override void Close ()
		{
			Reconnecting = false;
			Active = false;
			
			OnClosed (new ConversationEventArgs (this));
		}
		
		public override void InviteContact (IContact contact)
		{
			
		}
		
		public void SendMessage (IMessage msg)
		{
			ThrowUtility.ThrowIfNull ("message", msg);
			
			if (Active)
			{
				SendMessageCommand command = new SendMessageCommand (Convert.ToInt32(PrimaryContact.UniqueIdentifier), 0, GaduConstants.CLASS_MSG, msg.Markup);
				
				_connection.Send (command, false);
			}
			else
			{
				_outgoing_queue.Enqueue (msg);
			}
			
			LogMessage (msg);
		}
		
		public void IncomingMessage (int sender, string msg, int time, int clas)
		{
			Log.Debug ("Conversation received message from session.");
			
			GaduContact contact = Session.ContactCollection.GetContact (sender.ToString()) as GaduContact;
			
			if (contact == null)
			{
				// External contact. what shal we do? add them?
			}
			
			IMessage message = new Message (MessageFlag.Message, contact, _session.Account, DateTime.Now);
			message.SetMarkup (msg, null);
			
			if (!Active)
			{
				ActivityUtility.EmitActivity (this, new ReceivedMessageActivity (this, message));
				
				_incoming_queue.Enqueue (message);
			}
			else
			{
				OnMessageReceived ( new MessageEventArgs (message));
			}
		}
		
		public int CompareTo(GaduConversation conversation)
		{
			return conversation.UniqueIdentifier.CompareTo(this.UniqueIdentifier);
		}
	}
}